Opistoenathus Lonchurus
Moustache Jawfish is a peaceful and reef-compatible fish ideal for beginner aquarists.
Care Level: Beginner
Disposition: Peaceful
Min. Tank Size: 30 gallons
Mature Size: 3.5 inches
Reef Compatible: Yes
| Feature | Detail |
|---|---|
| Species | Opistoenathus Lonchurus |
| Size (Mature) | 3.5 inches |
| Minimum Tank Size | 30 gallons |
| Compatibility | Reef-safe, peaceful |
| Difficulty Level | Beginner |
FAQ
Is the Moustache Jawfish safe to keep with corals?
Yes, the Moustache Jawfish is reef-compatible and generally does not pose a threat to corals.
What is the typical size of this fish when fully grown?
The mature size of the Moustache Jawfish is 3.5 inches.
Is this fish suitable for beginners?
Yes, it is recommended for beginner aquarists due to its peaceful nature and low maintenance requirements.

Joanne Glover –
Easy to care for and very peaceful. I’ve kept it in a 30-gallon tank with corals for six months and it hasn’t caused any issues. It’s active but not aggressive, and the fish looks healthy.
Max Dyer –
Great addition to a reef tank. It’s calm and doesn’t bother the corals. I’m a first-time reef keeper and found it easy to set up and maintain.
Gavin Bower –
The fish has adapted well to the tank environment. It’s small but interesting to watch. I appreciate that it’s peaceful and doesn’t need much attention.